stylint/src/checks/checkForBrackets.js

A linter for stylus

'use strict';

var
    openBracket = /\{$/,
    closeBracket = /\}$/,
    interpolation = /({\S)(\S)+[}]|([{]\S[}])/;

module.exports = function checkForBrackets( line, areWeInAHash ) {
    if ( typeof areWeInAHash === 'undefined' || typeof line !== 'string' ) { return; }

    // if interpolation we cool
    if ( interpolation.test(line) ) {
        return false;
    }
    // not interpolation, has a { or }
    else if ( openBracket.test(line) || closeBracket.test(line) ) {
        // ex .someClass {
        if ( openBracket.test(line) && line.indexOf('=') === -1 ) {
            return true;
        }
        // ex } when not in a hash and not an interpolated variable
        else if ( closeBracket.test(line) && areWeInAHash ) {
            return false;
        }
        // ex } when not in a hash and not an interpolated variable
        else if ( closeBracket.test(line) && !areWeInAHash ) {
            return true;
        }
    }
    // else no brackets, return undefined
}